Merge f67c197 into 456da49

boa_cli/src/main.rs

@@ -93,7 +93,7 @@ struct Opt {
     #[clap(long, short = 'a', value_name = "FORMAT", ignore_case = true, arg_enum)]
     dump_ast: Option<Option<DumpFormat>>,
 
-    /// Dump the AST to stdout with the given format.
+    /// Dump the compiled bytecode and trace the execution stack
     #[clap(long = "trace", short = 't')]
     trace: bool,
 

boa_engine/Cargo.toml

@@ -14,6 +14,7 @@ readme = "../README.md"
 [features]
 profiler = ["boa_profiler/profiler"]
 deser = ["boa_interner/serde"]
+nan_boxing = []
 
 # Enable Boa's WHATWG console object implementation.
 console = []
@@ -42,6 +43,9 @@ dyn-clone = "1.0.5"
 once_cell = "1.10.0"
 tap = "1.0.1"
 icu = "0.5.0"
+sptr = "0.3.1"
+cfg-if = "1.0.0"
+num_enum = "0.5.7"
 
 [dev-dependencies]
 criterion = "0.3.5"

boa_engine/src/bigint.rs

@@ -1,11 +1,12 @@
 //! This module implements the JavaScript bigint primitive rust type.
 
-use crate::{builtins::Number, Context, JsValue};
+use crate::{builtins::Number, value::PointerType, Context, JsValue};
 use boa_gc::{unsafe_empty_trace, Finalize, Trace};
 use num_integer::Integer;
 use num_traits::{pow::Pow, FromPrimitive, One, ToPrimitive, Zero};
 use std::{
     fmt::{self, Display},
+    mem::{self, ManuallyDrop},
     ops::{Add, BitAnd, BitOr, BitXor, Div, Mul, Neg, Rem, Shl, Shr, Sub},
     rc::Rc,
 };
@@ -23,6 +24,16 @@ pub struct JsBigInt {
     inner: Rc<RawBigInt>,
 }
 
+unsafe impl PointerType for JsBigInt {
+    unsafe fn from_void_ptr(ptr: *mut ()) -> ManuallyDrop<Self> {
+        ManuallyDrop::new(mem::transmute(ptr))
+    }
+
+    unsafe fn into_void_ptr(bigint: ManuallyDrop<Self>) -> *mut () {
+        mem::transmute(bigint)
+    }
+}
+
 // Safety: BigInt does not contain any objects which needs to be traced,
 // so this is safe.
 unsafe impl Trace for JsBigInt {

boa_engine/src/builtins/array/array_iterator.rs

@@ -67,7 +67,8 @@ impl ArrayIterator {
     ///
     /// [spec]: https://tc39.es/ecma262/#sec-%arrayiteratorprototype%.next
     pub(crate) fn next(this: &JsValue, _: &[JsValue], context: &mut Context) -> JsResult<JsValue> {
-        let mut array_iterator = this.as_object().map(JsObject::borrow_mut);
+        let array_iterator = this.as_object();
+        let mut array_iterator = array_iterator.as_deref().map(JsObject::borrow_mut);
         let array_iterator = array_iterator
             .as_mut()
             .and_then(|obj| obj.as_array_iterator_mut())